LC
Trumpeter Swan Cygnus buccinator



Taxonomy

Taxonomic source(s)
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A. and Fishpool, L.D.C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.
del Hoyo, J.; Collar, N. J.; Christie, D. A.; Elliott, A.; Fishpool, L. D. C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Barcelona, Spain and Cambridge UK: Lynx Edicions and BirdLife International.

IUCN Red list criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- - -

Red List history
Year Category Criteria
2016 Least Concern
2012 Least Concern
2009 Least Concern
2008 Least Concern
2004 Least Concern
2000 Lower Risk/Least Concern
1994 Lower Risk/Near Threatened
1988 Lower Risk/Least Concern
Species attributes

Migratory status full migrant Forest dependency Does not normally occur in forest
Land mass type Average mass -
Distribution

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 7,770,000 medium
Extent of Occurrence non-breeding (km2) 4,870,000 medium
Number of locations -
Severely Fragmented -
Population and trend
Value Data quality Derivation Year of estimate
No. of mature individuals poor estimated 2009
Population trend Increasing estimated -
Decline (3 years/1 generation past) - - -
Decline (5 years/1 generation past) - - -
Decline (10 years/1 generation past) - - -
Decline (10 years/3 generation future) - - -
Decline (10 years/3 generation past and future) - - -
Number of subpopulations - - -
Percentage in largest subpopulation - - -
Generation length (yrs) 13.6 - - -

Trend justification: This species has undergone a small or statistically insignificant increase over the last 40 years in North America (data from Breeding Bird Survey and/or Christmas Bird Count: Butcher and Niven 2007).


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Canada N Extant Yes Yes
Mexico N Extant
USA N Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Canada Cardinal Lake
Canada Frank Lake (south)
Canada Grande Prairie - Trumpeter Swan IBA
Canada Frank Lake (north)
Canada Comox Valley
Canada Boundary Bay - Roberts Bank - Sturgeon Bank (Fraser River Estuary)
Canada Squamish River Area
Canada Chehalis River Estuary
Canada Cowichan estuary
Canada Somenos Marsh Wildlife Refuge
Canada Baynes Sound
Canada South Thompson River
Canada Fraser Lake
Canada Stuart, Tachie and Middle Rivers
Canada Vaseux Lake Area
Canada Tachick and Nulki Lakes
Canada Wye Marsh
Canada Greenwater Lake Provincial Park
Canada Nisultin River Delta
Canada Shallow Bay, Big Slough and Swan Lake
Canada M'Clintock Bay to Lewes River Marsh
Canada Tagish Narrows
USA Kahiltna Flats-Petersville Road
USA Redoubt Bay
USA Swanson Lakes
USA Copper River Delta
USA Hebgen Lake
USA Upper Tanana River Valley
USA Great Rivers Confluence-35
USA Skagit Bay

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Marine Neritic Estuaries major non-breeding
Wetlands (inland) Bogs, Marshes, Swamps, Fens, Peatlands major breeding
Altitude   Occasional altitudinal limits  

Threats & impact
Threat (level 1) Threat (level 2) Impact and Stresses
Climate change & severe weather Habitat shifting & alteration Timing Scope Severity Impact
Future Whole (>90%) Unknown Unknown
Stresses
Indirect ecosystem effects, Ecosystem degradation

Recommended citation
BirdLife International (2021) Species factsheet: Cygnus buccinator. Downloaded from http://www.birdlife.org on 23/04/2021. Recommended citation for factsheets for more than one species: BirdLife International (2021) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 23/04/2021.